DIED. Irene Dunne, 91, versatile screen actress and musical star; in Los Angeles. Dunne's aristocratic looks, sweet voice and flair for comedy cast her in a variety of roles, from the young romantic lead in Jerome Kern and Oscar Hammerstein II's Show Boat to the unflappable British governess in Anna and the King of Siam and the motherly Norwegian immigrant in I Remember Mama. Her co-stars included Cary Grant, Rex Harrison and William Powell. In 1957 President Dwight Eisenhower named her an alternate delegate to the U.N. General Assembly.